Question 1

Many of the symptoms of vitamin A deficiency, such as blindness and an increase in respiratory infections, are related to the role of vitamin A in:

Accepted Answer

A) blood clotting. 
B) the synthesis of visual pigment. 
C) the maintenance of epithelial cells. 
D) the synthesis of some hormones. 
E) the synthesis of nephrons.

Question 2

Vitamin B6 differs from the other water-soluble vitamins in that it:

Accepted Answer

A) does not play a role in the metabolism of energy-yielding nutrients. 
B) can be stored in muscle tissue. 
C) is absorbed like the fat-soluble vitamins. 
D) is only found in animal foods. 
E) is never found in vegetables.

Question 3

Excessive vitamin A during pregnancy poses a teratogenic risk by:

Accepted Answer

A) increasing the risk of birth defects. 
B) building up in the blood and causing calcification of soft tissues. 
C) resulting in a low-birth weight infant. 
D) increasing the risk of infectious disease. 
E) leading to four well-known autoimmune diseases.

Question 4

Which food contains the least vitamin E?

Accepted Answer

A) margarine 
B) salad dressing 
C) wheat germ oil 
D) butter 
E) green leafy vegetables

Question 5

Vitamin D deficiency is most likely observed among:

Accepted Answer

A) dark-skinned people who live in the south. 
B) fair-skinned people who live in the south. 
C) dark-skinned people with limited exposure to sunlight. 
D) fair-skinned people with limited exposure to sunlight. 
E) dark-skinned people who spend a lot of time outside.

Question 6

Which statement describes niacin?

Accepted Answer

A) It can be synthesized in the body from the amino acid tryptophan. 
B) It can be used successfully to cure schizophrenia. 
C) It is water soluble and therefore safe to administer in large doses. 
D) It is an antioxidant. 
E) It is a fat-soluble vitamin.

Question 7

After 30 minutes of sun exposure, which individual people would have synthesized the most vitamin D?

Accepted Answer

A) a light-skinned person 
B) a dark-skinned person 
C) a young child 
D) an older person 
E) a pregnant woman

Question 8

The effects of a vitamin D deficiency are most readily observed in the:

Accepted Answer

A) nervous system. 
B) skeletal system. 
C) muscular system. 
D) epithelial tissue. 
E) immune system.

Question 9

The replacement of red blood cells and digestive tract cells depends most heavily on:

Accepted Answer

A) thiamin. 
B) riboflavin. 
C) niacin. 
D) folate. 
E) biotin.

Question 10

How do the vitamins differ from carbohydrates, fats, and proteins?

Accepted Answer

The answer of How do the vitamins differ from carbohydrates,...

Question 11

The cooking method used to prepare a food can affect the bioavailability of vitamins.

Accepted Answer

A) True 
 B)False

Question 12

Many of the symptoms of vitamin C deficiency, such as dry scaly skin and failure of wounds to heal, are related to the role of vitamin C in the synthesis of:

Accepted Answer

A) calcium and iron. 
B) thyroxin. 
C) collagen. 
D) adrenal hormones. 
E) elastin.

Question 13

Match between columns
                        Premises: beriberi

Accepted Answer

The Answer of rupture of the red blood cells, caused is...

Question 14

Match between columns
                        Premises: neural tube defects

Accepted Answer

The Answer of the niacin-deficiency disease and the thiamin-deficiency disease is...

Question 15

The eight B vitamins must be present in every cell continuously in order for the cells to function properly.

Accepted Answer

A) True 
 B)False

Question 16

Which group of people is most at risk for a primary deficiency of vitamin B12?

Accepted Answer

A) the elderly 
B) infants 
C) athletes 
D) vegans 
E) pregnant women

Question 17

Which meal is lacking in vitamin C?

Accepted Answer

A) hotdog, cabbage, french fries, and milk 
B) roast beef, cheese sauce, noodles, and tea 
C) roast beef, broccoli, noodles, and coffee 
D) spaghetti with tomato sauce, meatballs, garlic bread, and cantaloupe 
E) French toast, eggs, sausage, and cabbage slaw

Question 18

The fact that one microgram of retinol and 12 micrograms of dietary beta-carotene are both equal to one retinol activity equivalent indicates that:

Accepted Answer

A) retinol has greater activity than beta-carotene. 
B) beta-carotene is not a significant dietary source of vitamin A. 
C) toxicity is more likely to occur with beta-carotene than retinol. 
D) beta-carotene is absorbed and converted less efficiently than retinoids. 
E) most individuals would benefit from retinol supplements.

Question 19

In adults, vitamin E deficiency is usually associated with diseases that cause malabsorption of carbohydrates.

Accepted Answer

A) True 
 B)False

Question 20

Which condition is the major cause of preventable childhood blindness in the world?

Accepted Answer

A) vitamin C deficiency 
B) riboflavin deficiency 
C) pantothenic acid deficiency 
D) vitamin A deficiency 
E) macular degeneration

Exam 8: The Vitamins

Many of the symptoms of vitamin A deficiency, such as blindness and an increase in respiratory infections, are related to the role of vitamin A in:

Vitamin B₆ differs from the other water-soluble vitamins in that it:

Excessive vitamin A during pregnancy poses a teratogenic risk by:

Which food contains the least vitamin E?

Vitamin D deficiency is most likely observed among:

Which statement describes niacin?

After 30 minutes of sun exposure, which individual people would have synthesized the most vitamin D?

The effects of a vitamin D deficiency are most readily observed in the:

The replacement of red blood cells and digestive tract cells depends most heavily on:

How do the vitamins differ from carbohydrates, fats, and proteins?

The cooking method used to prepare a food can affect the bioavailability of vitamins.

Many of the symptoms of vitamin C deficiency, such as dry scaly skin and failure of wounds to heal, are related to the role of vitamin C in the synthesis of:

Match each nutrition term with the appropriate definition.

Match each nutrition term with the appropriate definition.

The eight B vitamins must be present in every cell continuously in order for the cells to function properly.

Which group of people is most at risk for a primary deficiency of vitamin B₁₂?

Which meal is lacking in vitamin C?

The fact that one microgram of retinol and 12 micrograms of dietary beta-carotene are both equal to one retinol activity equivalent indicates that:

In adults, vitamin E deficiency is usually associated with diseases that cause malabsorption of carbohydrates.

Which condition is the major cause of preventable childhood blindness in the world?